G21C 13/00 Pressure vessels; Containment vessels; Containment in general (for chemical or physical processes B01J3/00; pressure vessels in general F16J12/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Pressure vessels; Containment vessels; Containment in general
CPC: Pressure vessels; Containment vessels; Containment in general (for chemical or physical processes B01J3/00; pressure vessels in general F16J12/00)
Full Title
Full titles differ between systems:
Pressure vessels; Containment vessels; Containment in general
Pressure vessels; Containment vessels; Containment in general (for chemical or physical processes B01J3/00; pressure vessels in general F16J12/00)
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G21C 13/08 Vessels characterised by the material; Selection of materials for pressure vessels IPC+CPC Available in IPC and CPC
- G21C 13/10 Means for preventing contamination in the event of leakage, IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G21,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA GENERAL NUCLEAR POWER CORPORATION 2,364
- CGN POWER COMPANY 1,899
- CHINA NUCLEAR POWER ENGINEERING COMPANY 1,870
- NUCLEAR POWER INSTITUTE OF CHINA 1,517
- KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,367
- WESTINGHOUSE ELECTRIC CORPORATION US 1,295
- KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,196
- CHINESE ACADEMY OF SCIENCES 1,044
- CHINA INSTITUTE OF ATOMIC ENERGY 1,011
- HITACHI-GE NUCLEAR ENERGY 955
Top Applicants (CPC)
Class G21,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA GENERAL NUCLEAR POWER CORPORATION 1,383
- WESTINGHOUSE ELECTRIC CORPORATION US 1,347
- KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,303
- CGN POWER COMPANY 1,156
- CHINA NUCLEAR POWER ENGINEERING COMPANY 1,149
- KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,146
- NUCLEAR POWER INSTITUTE OF CHINA 1,086
- CHINESE ACADEMY OF SCIENCES 765
- CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 763
- CHINA INSTITUTE OF ATOMIC ENERGY 659